Active matrix liquid crystal display unit having liquid crystal molecules less arranged like spray pattern and along bent line
AssigneeNEC LCD Technologies, Ltd.
InventorKimikazu Matsumoto
Life of this patent
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Abstract
Liquid crystal in an in-plane switching type active matrix liquid crystal display unit has elastic coefficients K11 and K33 which respectively concern a spray deformation and a bent deformation of the liquid crystal layer, wherein one of the elastic coefficients K11 and K33 is fallen within the range between 6 pN and 25 pN or the range between 5 pN and 20 pN; otherwise, the square root of the product between the elastic coefficients K11 and K33 is fallen within the range between 5 pN and 20 pN, thereby improving the luminance through restricting the spray deformation and/or the bent deformation.
Claims27
An in-plane switching type liquid crystal display unit comprising:
- a pair of substrate structures comprising at least plural pixel electrodes and a common electrode on one of said substrate structures;
- and
- a liquid crystal layer sandwiched between said substrate structures and having a splay elastic coefficient within the range expressed as:
- 6 pico-newton<said splay elastic coefficient<25 pico-newton
- for improving a luminance of said in-plane switching type liquid crystal display unit.
An in-plane switching type liquid crystal display unit comprising:
- a pair of substrate structures comprising at least plural pixel electrodes and a common electrode on one of the substrate structures;
- and
- a liquid crystal layer sandwiched between said substrate structures and having a bend elastic coefficient within the range expressed as:
- 5 pico-newton<said bend elastic coefficient<20 pico-newton
- for improving a luminance of said in-plane switching type liquid crystal display unit.
An in-plane switching type liquid crystal display unit comprising:
- a pair of substrate structures comprising at least plural pixel electrodes and a common electrode on one of said substrate structures;
- and
- a liquid crystal layer sandwiched between said substrate structures and having a splay elastic coefficient and a bend elastic coefficient are selected such that, the square root of the product between said splay elastic coefficient and said bend elastic coefficient within the range expressed as:
- 5 pico-newton<SQRT<20 pico-newton
- where SQRT is said square root of the product between said splay elastic coefficient and said bend elastic coefficient for improving a luminance of said in-plane switching type liquid crystal display unit.
Dependencies are inferred from the claim text.